My MTC is in and it works great. I can hammer the car on full boost all day and charge temps appear fine. More detailed testing is needed. The weather has been cooler of late so I don't have any 110+ degree days to compare with, but I can tell the temps are running cooler and the turbo and engine are very happy from the fact that before the IC install, boost seemed to really die off after 3-4 straight hard pulls.
Fitment was a challenge - to clear the bottom row of fins, I had to clip off the middle plastic bolt hole attachment which is clipped on to the bottom of the plastic radiator shroud. I am running with the lower air dam 3 bolts unbolted and it's not too much of an issue thus far. I didn't want to hack up the lower air dam, and there was no freaking way that the FMIC allowed the lower 3 bolt holes at the lower air dam to line up. I made it work. I re-used the stock plastic rubber stoppers that go on top of the upper post mounts of the MTC unit since even without them, the lower air dam bolts wouldn't line up. A little frustrating.
No instructions at all. I just followed the Cobb instructions since it's more or less the same. Seems like the Depo unit comes with instructions and hardware. I like the MTC one a lot, but if I could re-do it again, I'd probably get the Depo. That said the MTC should work great for me and I'm not planning on replacing it.